Advance Adapters The Atlas II Transfer Case by Advance Adapters

Through the analysis of other successful transfer case designs, we have manufactured a rugged, all gear-driven transfer case. Combining the latest in CAD/CAM technology and years of in-house CNC machining capabilities, the Atlas transfer case is sure to bring you the utmost in dependability and performance.

The Atlas is available for both left and right hand vehicle applications with centered rear differentials. The solid, one-piece case design is manufactured from 356-T6 heat-treated aluminum alloy. This material is also used for the structural access cover and all other exterior components. The massive gears are helical cut and synchro-equipped for quiet performance and “shift-on-the-fly” capability. These gears are supported by needle bearing elements, precision matched to strong 8620 shafts. The ruggedly designed output shafts are amply supported by large taper bearing sets. The Atlas also features a unique twin stick design to deliver crisp, quiet operation.

The Atlas transfer case offers you the ability to customize the transfer case to your vehicle. We offer several upgrades, options, and different configurations for this transfer case. Listed on the following pages is all the information to make your custom “made-to-order” Atlas the ultimate gear driven transfer case.

Material: 356-T6 Heat Treated Aluminum
Weight: 110 lbs. (dry)

Gears: Helical Cut
Bearings: Needle & Taper Rollers
Synchronizers: Borg Warner
Available Input Shaft Splines: 10, 21, 23, 25, 27, 28, 29, 31, 32, 34, 35

Tail Shaft H.D., 32 Spline,
Front Output 26 Spline or 32 Spline

Low Range: 2.0:1 or 3.0:1 or 3.8:1 or 4.3:1 or 5.0:1 or 6.0:1
High Range 1:1


*Atlas Short tail 11.8″ NP 231, 20.5″
*Atlas Long tail 13.8″ NP241 Rock Trac T/C, 15-1/4″ Dana 300, 12″

Related article: Transfer Case Upgrades, Modifications, and Options